Benjamin



(No Model.) r

. B. TRYON.

IGE PLOW.

Patented Feb. 27, 1883.

a! Z 2 V e 1 UNITED STATES PATENT OFFICE.

BENJAll'lINTRYON, OF COXSAGKIE, ASSIGNOR TO EMILE HENRY LAGOMBE,

OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 273,192, dated Februazry 27, 1883.

u Application filed July 14,1882. (No model.)

To all whom it may concern:

Be it known that 1, BENJAMIN TRYON, of Uoxsackie, in the county of Greene and State of New York, have invented a new and Improvedlce-Plow, of which the following is'a full, clear, and exact description.

The object of the invention is to lock the cutters at differentpoints of adjustment and take the usual wear from the blades.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of a portion of an ice-plow the blades or plows of which are made in accordance with my invention. Fig. 2 is a sectional elevation of one of the blades, taken on the line a: 0:, Fig.1. Fig. 3 is a side elevation of the body of one of the blades, and Fig. 4 is a perspective view of one of the cutters removed from the body or blade.

A A represent the main parts or blades of the plows. B B represent the separate steel cutters, and (J 0 represent the wedges.

The bodies or blades A are made curved or circular at their forward edges, and are stopped on the. bottom, as shown at a, and are held between the beams D D of the frame of the plow by means of the bolts b b, in theordinary manner. The forward curved or circular edges of ing the whole length of the blades.

The cutters B B are made curved or circu lar, and are formed with the groove 01 to match the curved edges and tongue 0 of the blades A, as shown clearly in Figs. 1 and 2. The forward edges of the cutters B B are grooved for a portion of their length, as shown at c, and the rear edges of the curved wedges are formed with the tonguesf to match the grooves e, as will be understood from Fig.2, so that when the wedges are driven in the frame of the plow, as shown in Fig. 1, the cutters B B and wedges G C will be locked firmly in place upon the bodies A and held against all danger of lateral movement. At the lower ends the cutters B B are beveled ed, as shown at i, so that when in place the lower ends of the out ters will continue in the same slant with the inclined portions g of the bottom of the blades ,or bodies- -the slantrequired for producing an effective cutting-point. The forward edges of the cutters and wedges are by preference made sharp and somewhat wider than the thickness of the bodies A, as shown in Fig. 2, so that they will properly clear the gutters cut in the ice of snow and fine particles of ice formed bythe plow. By this construction, when the cutters become dull, they may be easily removed by drawing out the wedges and sharpened by grinding or filing, and as easily replaced, and when the cutters become worn they may be set downwardly to take up the wear, thus greatly increasing the durability of the plow.

The beams D D are formed with the ofi'sets h h, as shown in Fig. 1, for the wedges G 0 to come against when driven into place for bolding the cutters.

Other means for attaching the cutters to the bodies or blades and the wedges to the cutters besides the tongue-and-groove joints-as, for instance, dowel-pins moving in slots; or other means-might be. used and not depart from the spirit of my invention.

As ordinarily constructed, the cutting-blades of ice-plows are made in one piece of metal, usually of soft steel, and when the cutting-point thereof wears away the entire surface of the foot or bottom of the cutting-blade must be dressed off by means of a file or an entirely new blade must be substituted. This work involves the loss of much time, cost, and labor, while by repeated filing the blades become so much reduced as to be useless.

with the body A, hav- By the use of 1 my improvements all of these difficulties are ing the tongue 0, of the removable cutter B ble cutter B, and wedge O, substantially as and Wedge (J, the cutter being formed with the and for the purposes set forth.

grooves d and e and the Wedge having the 5. The curved body A and the curved retonguef, substantially as described. movable cutter B, in combination with the [5 5 3. An ice-plow having the blade A, with Wedge O and frame of the plow, made with oft'- the under side running in a straight line, g, sets, substantially as and for the purposes defrom the shoulder to the point, whereby the scribed.

Wear is thrown upon the ends of the cutters BENJAMIN TEYON. and the bladesare rendered m uch more durable. WVitnesses: 10 4. The beams D D, formed with the ofisets EDGAR TATE,

h h, in combination with the body A, remova- EDWARD M. CLARK. 

